drivers/clk/davinci/psc.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Clock driver for TI Davinci PSC controllers
   4  *
   5  * Copyright (C) 2018 David Lechner <david@lechnology.com>
   6  */
   7
   8 #ifndef __CLK_DAVINCI_PSC_H__
   9 #define __CLK_DAVINCI_PSC_H__
  10
  11 #include <linux/clk-provider.h>
  12 #include <linux/types.h>
  13
  14 /* PSC quirk flags */
  15 #define LPSC_ALWAYS_ENABLED     BIT(0) /* never disable this clock */
  16 #define LPSC_SET_RATE_PARENT    BIT(1) /* propagate set_rate to parent clock */
  17 #define LPSC_FORCE              BIT(2) /* requires MDCTL FORCE bit */
  18 #define LPSC_LOCAL_RESET        BIT(3) /* acts as reset provider */
  19
  20 struct davinci_lpsc_clkdev_info {
  21         const char *con_id;
  22         const char *dev_id;
  23 };
  24
  25 #define LPSC_CLKDEV(c, d) {     \
  26         .con_id = (c),          \
  27         .dev_id = (d)           \
  28 }
  29
  30 #define LPSC_CLKDEV1(n, c, d) \
  31 static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  32         LPSC_CLKDEV((c), (d)),                                          \
  33         { }                                                             \
  34 }
  35
  36 #define LPSC_CLKDEV2(n, c1, d1, c2, d2) \
  37 static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  38         LPSC_CLKDEV((c1), (d1)),                                        \
  39         LPSC_CLKDEV((c2), (d2)),                                        \
  40         { }                                                             \
  41 }
  42
  43 #define LPSC_CLKDEV3(n, c1, d1, c2, d2, c3, d3) \
  44 static const struct davinci_lpsc_clkdev_info n[] __initconst = {        \
  45         LPSC_CLKDEV((c1), (d1)),                                        \
  46         LPSC_CLKDEV((c2), (d2)),                                        \
  47         LPSC_CLKDEV((c3), (d3)),                                        \
  48         { }                                                             \
  49 }
  50
  51 /**
  52  * davinci_lpsc_clk_info - LPSC module-specific clock information
  53  * @name: the clock name
  54  * @parent: the parent clock name
  55  * @cdevs: optional array of clkdev lookup table info
  56  * @md: the local module domain (LPSC id)
  57  * @pd: the power domain id
  58  * @flags: bitmask of LPSC_* flags
  59  */
  60 struct davinci_lpsc_clk_info {
  61         const char *name;
  62         const char *parent;
  63         const struct davinci_lpsc_clkdev_info *cdevs;
  64         u32 md;
  65         u32 pd;
  66         unsigned long flags;
  67 };
  68
  69 #define LPSC(m, d, n, p, c, f)  \
  70 {                               \
  71         .name   = #n,           \
  72         .parent = #p,           \
  73         .cdevs  = (c),          \
  74         .md     = (m),          \
  75         .pd     = (d),          \
  76         .flags  = (f),          \
  77 }
  78
  79 int davinci_psc_register_clocks(struct device *dev,
  80                                 const struct davinci_lpsc_clk_info *info,
  81                                 u8 num_clks,
  82                                 void __iomem *base);
  83
  84 int of_davinci_psc_clk_init(struct device *dev,
  85                             const struct davinci_lpsc_clk_info *info,
  86                             u8 num_clks,
  87                             void __iomem *base);
  88
  89 /* Device-specific data */
  90
  91 struct davinci_psc_init_data {
  92         struct clk_bulk_data *parent_clks;
  93         int num_parent_clks;
  94         int (*psc_init)(struct device *dev, void __iomem *base);
  95 };
  96
  97 #ifdef CONFIG_ARCH_DAVINCI_DA830
  98 extern const struct davinci_psc_init_data da830_psc0_init_data;
  99 extern const struct davinci_psc_init_data da830_psc1_init_data;
 100 #endif
 101 #ifdef CONFIG_ARCH_DAVINCI_DA850
 102 extern const struct davinci_psc_init_data da850_psc0_init_data;
 103 extern const struct davinci_psc_init_data da850_psc1_init_data;
 104 extern const struct davinci_psc_init_data of_da850_psc0_init_data;
 105 extern const struct davinci_psc_init_data of_da850_psc1_init_data;
 106 #endif
 107 #ifdef CONFIG_ARCH_DAVINCI_DM355
 108 extern const struct davinci_psc_init_data dm355_psc_init_data;
 109 #endif
 110 #ifdef CONFIG_ARCH_DAVINCI_DM356
 111 extern const struct davinci_psc_init_data dm365_psc_init_data;
 112 #endif
 113 #ifdef CONFIG_ARCH_DAVINCI_DM644x
 114 extern const struct davinci_psc_init_data dm644x_psc_init_data;
 115 #endif
 116 #ifdef CONFIG_ARCH_DAVINCI_DM646x
 117 extern const struct davinci_psc_init_data dm646x_psc_init_data;
 118 #endif
 119
 120 #endif /* __CLK_DAVINCI_PSC_H__ */